25
The above-mentioned measures means that
the cylinder head cover is not directly coupled
with the cylinder head. It is, therefore, “insula-
ted“ against vibrations generated by the
engine.
SSP217_040
Cylinder head
cover
Decoupling element
(short)
SSP217_043
The securing bolts must be tightened
uniformly in the specified order to
prevent distortion of the cylinder
head cover and to ensure that the
seal is completely air-tight.
Always refer to the information given
in the repair manual.
Cylinder-head cover seal
The thin-wall cylinder head covers are made
of a die-cast magnesium alloy. A seal concept,
which decouples the cylinder head cover from
the cylinder head, improves the acoustics of
the engine.
The bolted connections of the cylinder head
cover have decoupling elements.
A seal, which is similar to a radial shaft oil
seal, is used for the spark-plug shaft.
735
119
1012
648
1
2
Spacer sleeve
Seal -
cylinder head cover
Decoupling
element (long)
Seal
Profiled rubber grommet
Spacer sleeve
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